document.write( "Question 648378: How many liters of a 30% alcohol solution must be mixed with 80 liters of a 90% solution to get a 40% solution? \r
\n" ); document.write( "\n" ); document.write( "Here is the equation that I tried to make out of it.\r
\n" ); document.write( "\n" ); document.write( ".3x times .9(80)= .40\r
\n" ); document.write( "\n" ); document.write( "It seems so simple but I keep screwing it up.
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Algebra.Com's Answer #406690 by Alan3354(69443)\"\" \"About 
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How many liters of a 30% alcohol solution must be mixed with 80 liters of a 90% solution to get a 40% solution?
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\n" ); document.write( "You have 80 l of 90%
\n" ); document.write( "You add x liters of 30%
\n" ); document.write( "80*90 + x*30 = (80 + x)*40
\n" ); document.write( "Solve for x
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